Improvement in crucibles for melting iron and steel



INvENToRg AME@ EATWoa. l

UNITED STATES PATENT OEEICE JAMES E. A'rWooD,-o1a` PITTSBUEG,PENNSYLVANIA.

IMPROVEMENT INCRUCIBLES FOR MELTING IRON AND STEEL.

Speciication forming part of Letters Patent N0. 108,084, dated October1l, 1870, antedated October 8, 1870.

To all whom -it may concern:

Be it known that l, JAMES E. ATWOOD, of Pittsburg, Allegheny county, andState of Pennsylvania, have invented a new and useful Improvement inGrucibles; and I do hereby declare the following to be a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, forming a part 4of this specification, in Which- Figure l isarepresentation of a Crucible with my improvement. Letters A1A are theflux-ringer convex ring. Fig. 2 represents a Letters B an inside former,all that is necessary to do is to cut out a concave in said former aboutthree inches in length and about onehalf inch deep. The concave in theformer Will make the convex ring or bulge A A.

A crucible made with my improvement is not only stronger, but Will runone more heat than a Crucible made oi' the same material will runWithout it, and less danger of breaking.

There may be a slight bulge on the outside of the crucible; but thatwould interfere with the handling of the Crucible with the tongs.

Claim.

I Claim as my invention- A Crucible for melting iron, steel, and othermetals, when constructed with a iiux-ring, as herein described, and forthe purpose set forth.

J. E. AATVVOOD.

Witnesses:

THOMAS J. DURAND, BENJ. F. ASPER.

